A 20-cm in diameter pipeline with a relative roughness of 0.01 has a total length of 45 m. When water (viscosity is 1x10-7 m2/s)is pumped through it at a rate of 5 m3/min, the major head loss (m) is most nearly
A) 3 mB) 10 mC) 15 mD) 20 m

Answers

Answer 1

Answer:

A) 3 m

Explanation:

The major head loss is calculated by using the expression: \(f \dfrac{L}{D}( \dfrac {U^2}{2g})\)

here:

U = Q/A

Using the continuity equation:

\(U = \dfrac{Q}{\dfrac{\pi}{4}D^2}\)

\(U = \dfrac{5/60 \ m^3/s}{\dfrac{\pi}{4}(0.2)^2}\)

U = 2.65 m/s

Reynolds no = \(\dfrac{\rho U D}{\mu}\)

\(= \dfrac{998 \ kg/m^3 \times 2.65 \ m/s \times 0.2 m}{8.93 \times 10^{-4} \ Pa^-s}\)

= 594,894

Thus, this implies that the flow is turbulent.

Using Moddy's diagram at 5.94 × 10⁻⁵ &;

the relative roughness of 0.01

f = 0.038

Thus, the major head loss = \(f \dfrac{L}{D}( \dfrac {U^2}{2g})\)

\(=0.038 \times (\dfrac{45\ m }{0.2\ m } )\times \dfrac{(2.65 \ m/s) ^2}{2(9.81 \ m/s^2)}\)

= 3.06 m

\(\simeq\) 3 m


Related Questions

Two coils connected in series-aiding fashion have a total inductance of 500mH. When connected in a series-opposing configuration, the coils have a total inductance of 300mH. If the inductance of one coil (Li) is three times the other, find L, L2 and M. What is the coupling coefficient?

Answers

The given information is;Two coils connected in series-aiding fashion have a total inductance of 500mH.

1.When connected in a series-opposing configuration, the coils have a total inductance of 300mH.

2.If the inductance of one coil (Li) is three times the other, we are to find L, L2, M, and the coupling coefficient.Let's consider the two coils L1 and L2, where L1 is three times L2.

3.Let the mutual inductance between L1 and L2 be M.When the two coils are connected in a series-aiding configuration, the equivalent inductance is given by:Leq = L1 + L2 + 2ML1 = 3L2Thus,Leq = 3L2 + L2 + 2M= 4L2 + 2M = 500 mHAgain, when the two coils are connected in a series-opposing configuration, the equivalent inductance is given by:Leq = L1 + L2 - 2MLeq = 3L2 + L2 - 2M= 4L2 - 2M = 300 mHSolving the above two equations, we get;4L2 + 2M = 500.... (1)4L2 - 2M = 300.... (2)Solving the above equations, we can find the value of L2 and M.L2 = 50 mHM = 75 mHSubstituting the value of L2 and M in equation (1), we can find the value of L1.L1 = 150 mHSo, L1 = 150 mHL2 = 50 mHM = 75 mHThe coupling coefficient, k can be given as;k = M/√(L1L2)Therefore,k = 75 / √(150 × 50)k = 0.5Hence, the value of the coupling coefficient is 0.5.

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installation of all piping within the walls, floors, and ceilings of the finished building is called ____.

Answers

The installation of all piping within the walls, floors, and ceilings of the finished building is called rough-in plumbing.

This refers to the initial installation of the plumbing system before the walls, floors, and ceilings are finished. It includes the installation of water supply lines, waste and vent pipes, and any other necessary plumbing fixtures. Once the rough-in plumbing is installed, it is then covered by the finished materials, such as drywall, flooring, and ceiling tiles. The purpose of rough-in plumbing is to ensure that all necessary pipes and fixtures are installed in the correct locations before the finishing work begins. This helps to avoid any future problems or complications that may arise from incorrect installation. Once the rough-in plumbing is complete, the next step is the installation of the plumbing fixtures, such as sinks, toilets, and showers, followed by the final finishing work. Overall, rough-in plumbing is an essential aspect of any building project, as it lays the foundation for the entire plumbing system.

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An oil refinery finds that it is necessary to treat the waste liquids from a new process before discharging them into a stream. The treatment will cost ​$40,000 the first​ year, but process improvements will allow the costs to decline by ​$4,000 each year. As an​ alternative, an outside company will process the wastes for the fixed price of $20,000​/year throughout the 11 year​ period, payable at the beginning of each year. Either​ way, there is no need to treat the wastes after 11 years. Use the annual worth method to determine how the wastes should be processed. The​ company's MARR is 7​%.
What is AW in-house treatment
What is AW out-house treatment

Answers

The company should go with the out-house treatment option, as it has a lower annual worth value and will result in lower costs over the 11-year period.

GivenDataAn oil refinery finds that it is necessary to treat the waste liquids from a new process before discharging them into a stream. The treatment will cost $40,000 the first year, but process improvements will allow the costs to decline by $4,000 each year.An outside company will process the wastes for the fixed price of $20,000/year throughout the 11 year period, payable at the beginning of each year.MARR = 7%FormulaAnnual Worth (AW) = (P/A, i%, n)Annual Worth (AW) = Present Worth (PW) + Future Worth (FW)Where,P = Initial Cost (Present Worth)A = Capital Recovery Factori = InterestRaten = Life of the ProjectCalculationFirst of all, we calculate the AW of in-house treatment. The cash outflow would be $40,000 in year 0, then $36,000 ($40,000 – $4,000) in year 1, then $32,000 ($36,000 – $4,000) in year 2, and so on until year 10, and the cash inflow would be $0 as there is no salvage value.Annual Worth (AW) = (P/A, i%, n)Present Worth (PW) = $40,000Future Worth (FW) = $0Capital Recovery Factor (CRF) = (i(1 + i)n)/((1 + i)n – 1) = (0.07(1 + 0.07)11)/((1 + 0.07)11 – 1) = 0.122053Annual Worth (AW) = (P/A, i%, n)= ($40,000/0.122053)= $327,814.53Therefore, the AW of in-house treatment is $327,814.53.Now, we calculate the AW of out-house treatment. The cash outflow would be $20,000 in each year from year 0 to year 10, and the cash inflow would be $0 as there is no salvage value.Annual Worth (AW) = (P/A, i%, n)Present Worth (PW) = $20,000Capital Recovery Factor (CRF) = (i(1 + i)n)/((1 + i)n – 1) = (0.07(1 + 0.07)11)/((1 + 0.07)11 – 1) = 0.122053Annual Worth (AW) = (P/A, i%, n)= ($20,000/0.122053)= $163,907.27Therefore, the AW of out-house treatment is $163,907.27. AW in-house treatment = $327,814.53 AW out-house treatment = $163,907.27.

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How can the adoption of a data platform simplify data governance for an organization?How can the adoption of a data platform simplify data governance for an organization?

Answers

Answer:

provides the Organization with accurate data analytics ,

provides/ensures strict compliance in the organization,

helps in lowering the cost of managing data in the organization and

provides the data scientists access to the exact data they require to work with

Explanation:

The adoption of a data platform by an organization for the purpose of  handling Data, helps to simplify data governance by :

i)provides the Organization with accurate data analytics ,

ii) provides/ensures strict compliance in the organization,

iii) It helps in lowering the cost of managing data in the organization and

iv) provides the data scientists access to the exact data they require to work with

why is it difficult to dissolve cellulose in solvent that dissolve petroleum based polymers

Answers

The crystallinity of cellulose as well as its polar qualities makes it less difficult to dissolve. It has a three-dimensional hydrogen bond (H-bond) arrangement with the hydroxyl group connected to each polymer chain. On the other hand, Hydrocarbon polymers are nonpolar, and nonpolar solvents are used to dissolve them.

What exactly is cellulose?

Cellulose is an organic molecule with the formula n that is a polysaccharide made up of a linear chain of hundreds to thousands of β  linked D-glucose units. Cellulose is a structural component of the major cell wall of green plants, many algae, and oomycetes.

Cellulose is the principal component present in plant cell walls and aids in the plant's stiffness and strength. Although cellulose cannot be digested by humans, it is an essential source of fiber in the diet. Cellulose is utilized in the production of clothing and paper.

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technician a says that hydrocracking is used mostly in the manufacture of diesel fuel. technician b says that thermal cracking produces a high-quality gasoline suitable for today's engines. which technician is correct?

Answers

A sidecut from the vacuum distillation column known as heavy vacuum gas oil is often subjected to hydrocracking, a second catalytic cracking operation.

The long chain hydrocarbon molecules in the oil are divided into smaller ones by a catalyst when it is combined with hydrogen and passes over it. The temperature and the presence of catalysts have a significant impact on the pace of cracking and the hydrocracking's final products. Hydrogen is utilized to break the C-S and C-N bonds in Hydrotreatment, a similar cracking process (previously discussed in Section 4.3); in Hydrocracking, the desired break is in the C-C bonds, and the main products are typically jet fuel and diesel. Therefore, hydrocracking is applied where there is a high demand for diesel fuel.

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Tyler is developing a robot that can be sent into war zones to ensure that any mines have been detonated before soldiers are sent into the area. The government is requiring a full scale model of this robot before it is willing to purchase one

Answers

The reason a prototype is necessary before committing to a purchase in this scenario is that the robot might be very expensive.

What is a prototype?

In Engineering, a prototype can be defined as a rudimentary (early) model, release, or sample of a particular product, so as to avail the developers and manufacturers an opportunity and ability to test a concept, functionality, or process within it.

This ultimately implies that, the main purpose of the prototype of a robot is to determine and show whether or not the robot and all of its features are in tandem with the design specifications and market requirements.

In this context, we can reasonably infer and logically deduce that the government requested for a full scale model of the robot before it would purchase one because it is most likely to be very expensive.

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Complete Question:

Tyler is developing a robot that can be sent into war zones to ensure that any mines have been detonated before soldiers are sent into the area. The government is requiring a full-scale model of this robot before it is willing to purchase one.

What explains why a prototype is necessary before committing to a purchase in the following scenario?

Question # 3
Multiple Choice
Which events significant to the United States transportation industry occurred in the 1970s and 1980s?


A.The FCC was created.

B.Laws to begin regulating pipeline transportation were enacted.

C.Many transportation industries were deregulated.

D.The regulation of transportation industries began.

Answers

i believe the answer is c

Answer:

c Many transportation industries were deregulated.

Explanation:

correct on edge 2022

check engine light is illuminated on the instrument panel. what action should you take

Answers

Answer:

Connect your computer to the OBD(On-Board Diagnostics) port and see whats wrong

Explanation:

im a mekanic

mechanik

mecanic

meckanic

nvm, I fix cars

check engine light is illuminated on the instrument panel. what action should you take

Find a regular grammar to describe each of the following languages.d. {a, aaa, aaaaa,…, a2n+1,…}.please write both the right-regular and left-regular grammars.

Answers

The left regular grammar is: S -> Ba, B -> Aaa | ε Both the right-regular and left-regular grammars describe the given language, which includes odd-length strings of the letter 'a'.

To find a regular grammar to describe the language {a, aaa, aaaaa,…, a²ⁿ⁺¹,…}. This language consists of odd-length strings of the letter 'a'.

Right-regular grammar:
1. Start with the non-terminal symbol S.
2. Add the rule S -> aA, where A is a new non-terminal symbol.
3. Add the rule A -> aaA | ε, where ε denotes the empty string.

So, the right-regular grammar is:
S -> aA
A -> aaA | ε

Left-regular grammar:
1. Start with the non-terminal symbol S.
2. Add the rule S -> Ba, where B is a new non-terminal symbol.
3. Add the rule B -> Aaa | ε, where ε denotes the empty string.

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QUESTION 2 Suppose that an algorithm performs two steps, the first taking f(n) time and the second taking g(n) time. How long does the algorithm take? Of(n) + g(n) f(n)g(n) O f(n^2) O g(n^2)

Answers

The algorithm takes f(n) + g(n) time.

The algorithm performs two steps, each taking a certain amount of time. The first step takes f(n) time and the second step takes g(n) time. Therefore, the total time taken by the algorithm is the sum of these two times, which is f(n) + g(n).

When analyzing the time complexity of an algorithm, it is important to consider each step that the algorithm takes and the amount of time it takes to perform that step. In this case, the algorithm performs two steps: the first takes f(n) time and the second takes g(n) time. Therefore, the total time taken by the algorithm is the sum of these two times, which is f(n) + g(n) It is worth noting that the time complexity of the algorithm can also be expressed using Big O notation. If f(n) is the dominant term in the time complexity, then the algorithm has a time complexity of O(f(n)). If g(n) is the dominant term, then the algorithm has a time complexity of O(g(n)). If both f(n) and g(n) are of the same order of magnitude, then the algorithm has a time complexity of O(f(n) + g(n)). However, it is important to remember that Big O notation only provides an upper bound on the time complexity of an algorithm. The actual time taken by the algorithm may be lower than the upper bound provided by Big O notation.

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(3 marks) b) Prototyping is recommended in Design Thinking. Describe TWO (2) objectives in conducting prototyping in Design Thinking. [CO1, PO3, C3] (6 marks)

Answers

Two objectives in conducting prototyping in Design Thinking are as follows:

1. Exploration and Ideation: Prototyping allows designers to explore and ideate different concepts and ideas in a tangible form. It provides a hands-on approach to generating and visualizing potential solutions to the identified problem or challenge. By creating prototypes, designers can quickly generate multiple design options, test alternative approaches, and explore different possibilities. This objective helps in fostering creativity, generating new ideas, and pushing the boundaries of design thinking.

2. User Engagement and Empathy: Prototyping encourages active involvement and engagement of users throughout the design process. By involving users in the prototyping stage, designers can gather valuable feedback and insights from the end-users themselves. Prototypes serve as a communication tool, enabling designers to effectively communicate their design concepts and intentions to users and stakeholders. This objective helps in fostering empathy, understanding user needs and preferences, and ensuring that the final design solution aligns with user expectations.

By achieving these objectives, prototyping in Design Thinking helps designers to move beyond theoretical concepts and create tangible representations of their ideas. It allows for experimentation, user engagement, and iteration, leading to innovative and user-centered design solutions. Prototyping serves as a bridge between ideation and implementation, enabling designers to validate their ideas, gather feedback, and refine their designs iteratively.

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we want to specify an rc3 class fit for the illustrated hole and shaft. what is the minimum allowable diameter of the hole if its basic size is 1.25 inches?

Answers

The basic size of the hole for an RC3 fit is 1.25 + 0.0015 = 1.2515 inches

How to specify an RC3?

To specify an RC3 fit for the illustrated hole and shaft, we need to determine the minimum allowable diameter of the hole.

First, we need to know the limits of the hole and shaft sizes for an RC3 fit.

According to ANSI B4.1 standard for fits and tolerances, the basic size of the shaft is 1.25 inches and the tolerance class is H11.

The basic size of the hole for an RC3 fit is determined by adding a certain amount of allowance to the basic size of the shaft.

The allowance is calculated based on the fit type, the shaft tolerance class, and the hole tolerance class. For an RC3 fit, the allowance is 0.0015 inches.

Therefore, the basic size of the hole for an RC3 fit is 1.25 + 0.0015 = 1.2515 inches. This is the minimum allowable diameter of the hole for the specified fit.

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Design a single loop circuit with one voltage source and two resistors; one of them is any resistor available in the lab, 7 k., and the other one is a variable resistor, which is considered as the load resistor, RĮ. Your circuit must be designed (source value) such that the maximum power dissipated in R_ is 3.28 mW. Write your answer without the unit.

Answers

Design of single loop circuit a single loop circuit is an electric circuit with only one loop that starts and ends at the same point.

          It is typically composed of a single voltage source, which provides the electric charge, and two resistors, which impede the current flow in the circuit.

To calculate the maximum power dissipated in RĮ, we must first establish the circuit's voltage and current values, as well as the resistors' values, since the power formula is given as P = VI = I²R = V²/R.

         Since we know that the maximum power dissipated in RĮ is 3.28 mW, we may use this equation to compute the other values, as shown below:

       3.28 mW = V²/RĮ

                    V = √(3.28 mW x RĮ)

                     I = V/(R1 + RĮ)

We know that the resistance R1 is 7 kΩ, and the circuit maximum  power Pmax is 3.28 mW,

   So we can use the power equation to calculate

           RĮ: Pmax = V²/RĮ 3.28 mW

                          = V²/RĮ V

                          = √(3.28 mW x RĮ) V²

                          = 3.28 mW x RĮ RĮ

          RĮ: Pmax = V²/3.28 mW

   Since we know that R1 is 7 kΩ, we can now compute

            RĮ: RĮ = V²/3.28 mW RĮ

                     = V²/(3.28 mW x 10³) RĮ

                     = V²/3,280

   We may now substitute these values into the current equation:

             I = V/(R1 + RĮ) I

             I = V/[7 kΩ + (V²/3,280)]

Finally, we may substitute these values into the power equation to get the maximum power dissipated in

            RĮ: P = I²RĮ P

                    = [V/(7 kΩ + (V²/3,280))]² x RĮ P

                    = [V/(7 kΩ + (V²/3,280))]² x V²/3,280 P

           RĮ: P = V⁴/[3,280 x (7 kΩ + (V²/3,280))]²

The above equation indicates that P will be a maximum when dP/dV = 0.

Solving for dP/dV: dP/dV = (16/3,280)V² - (8/7)

                                            = 0 16V²/3,280 - 8/7

                                            = 0 V²

                    dP/dV: dP/dV = 3,280/14

The value of V, therefore, is: V = √(3,280/14) = 12.21 V The value of RĮ is as follows:

            RĮ = V²/3,280 RĮ

                = 12.21²/3,280 RĮ

           RĮ = 45.37 Ω

Thus, a single loop circuit with one voltage source and two resistors, one 7 kΩ resistor, and one 45.37 Ω variable resistor should be designed to ensure that the maximum power dissipated in RĮ is 3.28 mW.

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Developer wishes to construct an office building of 10,000m2 gross floor area, of which 8,000 m2will be available for letting. The construction costs are estimated to be $6,000/m2. In addition, there are ancillary construction costs of $400,000 in laying roads and sewers to the building. Professional fees are estimated to total 13% of construction costs. Short-term finance is available at 16%. The expected rent is $3,000/m2 p.a. net. The developer wishes to see a return for risk and profit of 20% of development value. The pre-contract period is expected to be 6 months, the building work is estimated to take 15 months, and a period of 3 months has been allowed for letting. The developer intends to sell the completed and fully let development to a financial institution, and it is anticipated that an initial yield of 7% will be required. Within these parameters, the value of the site has to be established.

Answers

The value of the site is $10,472,000.

Here are the calculations:

The total construction costs are:

$6,000/m2 * 10,000m2 + $400,000 = $64,000,000

The professional fees are:

$64,000,000 * 0.13 = $8,320,000

The total development costs are:

$64,000,000 + $8,320,000 = $72,320,000

The developer's return for risk and profit is:

$72,320,000 * 0.20 = $14,464,000

The total cost of the development is:

$72,320,000 + $14,464,000 = $86,784,000

The expected rent is:

$3,000/m2 * 8,000m2 * 12 months = $28,800,000

The initial yield is:

$28,800,000 * 0.07 = $2,016,000

The value of the site is:

$86,784,000 - $2,016,000 = $10,472,000

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the coil polarity in a waste spark system is determined by the direction in which the coil is wound (left hand rule for conventional current flow) and cant be changed. for example if a V8 engine has a firing order of 18436527 and number one cylinder is on compression which cylinder would be on the exhaust stroke?

Answers

A V-8 engine that posses a firing order of 18436572 with number 1 cylinder on compression, the cylinder which would be on the exhaust stroke is number: A. 6.

What is an injector?

An injector can be defined as a mechanical device that is designed and developed for the introduction of fuel into the internal combustion system of an engine, especially under pressure.

The types of fuel injection system.

In Engineering, there are two (2) main types of fuel injection system and these include the following:

Simultaneous fuel injection.Sequential fuel injection.

What is a sequential fuel injection?

A sequential fuel injection is typically designed and developed to spray fuel into the internal combustion system of an engine based on the firing order that is configured within it by the manufacturer.

As a general rule, one of the two-paired spark plugs within the internal combustion system of an engine is always designed to have a negative polarity while the other spark plug is designed to have a positive polarity always.

In this context, we can infer and logically deduce that a V-8 engine that posses a firing order of 18436572 with number 1 cylinder on compression, the cylinder which would be on the exhaust stroke is number 6.

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Complete Question:

The coil polarity in a waste-spark system is determined by the direction in which the coil is wound (left-hand rule for conventional current flow) and can't be changed. for example, if a v-8 engine has a firing order of 18436572 and number 1 cylinder is on compression, which cylinder will be on the exhaust stroke?

A. 6

B. 4

C. 8

D. 2

If the circuit current is 3 A, what is the value of R3?

72 volts
R1= 36Ω
R2= 50 Ω
R3=?

If the circuit current is 3 A, what is the value of R3?72 voltsR1= 36R2= 50 R3=?

Answers

Answer:

22 Ω

Explanation:

0) to re=write the given schema;

1) to write common equation of U[V];

2) to calculate the value of the current I₁ [A];

3) to write the common equation of current I [A];

4) to calculate the value of the current I₂₃ [A];

5) to calculate the value of R₃ [Ω] using the common equation of U.

If the circuit current is 3 A, what is the value of R3?72 voltsR1= 36R2= 50 R3=?

You need to replace a fiber optic cable that is connecting two switches together. You inspect the existing fiber cable and determine that it uses LC connectors. You also notice the cable's ferrule has a slight slant to it. Which polish grade should you use to replace the existing cable?

Answers

Angled Physical Contact polish

So, To replace the fiber optic cable that connects two switches. If it is found that the existing fiber cable to ensure it has LC connectors and also if the cable's ferrule has a slight slant to it.

Angled Physical Contact polish should be used to replace the existing cable.

What is Angled Physical Contact polish?

APC Connector is a type of fiber connector that reduces back-reflection by applying a 5° to 15° angle-polish to the end faces.

Because of the angle, the reflected light escapes into the cladding rather than remaining in the fiber core.

Angled connectors should only be mated with other angled connectors. When mated to a non-angle polished connector, insertion loss is extremely high. Angle-polished connectors typically have a higher insertion loss than good quality straight physical contact connectors.

When connected, "Ultra" quality connectors may achieve back reflection comparable to an angled connector, but an angled connection maintains low back-reflection even when the output end of the fiber is disconnected.

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Does Layout inspection in IATF includes sub-components of a product?

Answers

Yes, the layout inspection in IATF (International Automotive Task Force) includes sub-components of a product. The layout inspection is a part of the production part approval process (PPAP) that is required for automotive parts suppliers to demonstrate their ability to meet customer requirements.

The purpose of the layout inspection is to ensure that the parts or components produced meet the dimensional and other specifications and requirements specified by the customer. This includes the inspection of sub-components as well as the final product.

The layout inspection typically involves measuring the dimensions and tolerances of the parts or components using tools such as coordinate measuring machines (CMMs) and gauges. The results of the inspection are then compared to the specifications and requirements specified by the customer to ensure that the parts or components are within the acceptable range.

In summary, the layout inspection in IATF includes sub-components of a product to ensure that all parts or components meet the specified requirements and specifications.

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what happens if your son makes a spark in a outlet and then the room goes dark

Answers

Answer:

He probably tripped the wiring, when metal hits the electricity it creates a reaction that burns the wiring.

Explanation:

Determine the angles made by the vector V = - 36i + 15j with the positive x- and y-axes. Write the unit vector n in the direction of V.

Answers

Answer:

  157.38° CCW from +x axis

  67.38° CCW from +y axis

  n = (12/13)i +(5/13)j

Explanation:

The reference angle is ...

  arctan(15/36) ≈ 22.62° . . . . CW from the -x axis

The signs of the component vectors indicate this is a 2nd-quadrant vector, so the angles of interest are ...

  157.38° CCW from +x axis

  67.38° CCW from +y axis

The unit vector will be ...

  n = cos(157.38°)i +sin(157.38°)j

 n = (12/13)i +(5/13)j

In poor weather you should___ your following distance

Answers

The answer is increase

1.Shortcut operators are faster than the conventional arithmetic operators.
2.You can declare more than one variable in a single line.
3.You must use else after every if statement.
what is answer?

Answers

It's important to note that this speed difference is only noticeable for large programs. For small programs, the difference is negligible.

1. Shortcut operators are faster than the conventional arithmetic operators: This statement is true. Shortcut operators are faster because they combine arithmetic operations with variable assignments in a single statement. For example, instead of writing "a = a + 2", you can write "a += 2". This saves time and reduces the amount of code you need to write. However, it's important to note that this speed difference is only noticeable for large programs or when dealing with complex calculations. For small programs, the difference is negligible.
2. You can declare more than one variable in a single line: This statement is also true. In many programming languages, you can declare and initialize multiple variables on the same line. For example, instead of writing "int a; int b; int c;", you can write "int a, b, c;". This saves space and makes your code more concise. However, it's important to note that you should only do this if the variables are related and have the same data type.
3. You must use else after every if statement: This statement is false. It's not necessary to use else after every if statement. You can use if statements on their own if you don't need to execute any code if the condition is not true. However, if you need to execute code in both cases (true and false), then you should use else. It's also important to note that you can use else if to test for additional conditions if the first if statement is not true.

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The one end of a hollow square bar whose side is (10.01) in with (1.01) in thickness is under a tensile stress 102,500 psi and the other end is connected with a U bracket using a double-pin system. Find the minimum diameter of pin is used according to shear strength. Take the factor of safety as 1.5 and σ_all=243 ksi for pin material.

Answers

Answer:

The one end of a hollow square bar whose side is (10+N/100)  in with (1+N/100)  in thickness is under a tensile stress 102,500 psi and the other end is connected with a U bracket using a double-pin system. Find the minimum diameter of pin is used according to shear strength. Take the factor of safety as 1.5 and σ_all=243 ksi for pin material.

Explanation:

Segments ab and cd of the assembly are solid circular rods, and segment bc is a tube. If the assembly is made of 6061-t6 aluminum, determine the displacement of end d with respect to end a.

Answers

The displacement of end D with respect to end A is \(-0.488 \times 10^{-3}\;m\)

Given the following data:

Length = 435 mm to m = 0.435 meter.Modulus of elasticity = 68.9 GPa.Radius A = 20 mm to m = 0.03 meter.Inner radius BC = 30 mm to m = 0.03 meter.Outer radius BC = 40 mm to m = 0.04 meter.Force A = 10 kN.Force B = 15 kN.

To determine the displacement of end D with respect to end A:

How to calculate the displacement.

First of all, we would do a sectional cut of the circular rods at point A and then determine the sum of forces acting on it:

\(\sum F=0\\\\ 10000+N_1=0\\\\N_1 = -10000\;N\)

Mathematically, the displacement of a circular rod is given by this formula:

\(d = \frac{NL}{AE}\)

Where:

N is the normal force.L is the length.A is the area.E is the modulus of elasticity.

Substituting the given parameters into the formula, we have;

\(d_1 = \frac{-10000 \times 0.435}{\frac{3.142 \times 0.02^2}{4} \times 68.9 \times 10^9} \\\\d_1 = \frac{-4350}{0.0003142 \times 68.9 \times 10^9}\\\\d_1 =-0.201 \times 10^{-3}\;meter\)

For section cut BC:

\(\sum F=0\\\\ 10000-20000+N_2=0\\\\N_2 = 10000\;N\)

\(radius = outer\;radius^2 - inner\;radius^2\\\\radius = 0.04^2 -0.03^2=0.0007\;m\)

\(d_2 = \frac{10000 \times 0.435}{\frac{3.142 \times 0.0007^2}{4} \times 68.9 \times 10^9} \\\\d_2 = \frac{4350}{0.00054985 \times 68.9 \times 10^9}\\\\d_2 =0.115 \times 10^{-3}\;meter\)

For section cut D:

\(\sum F=0\\\\ -20000-N_3=0\\\\N_3 =- 20000\;N\)

\(d_3 = \frac{-20000 \times 0.435}{\frac{3.142 \times 0.02^2}{4} \times 68.9 \times 10^9} \\\\d_3 = \frac{-8700}{0.0003142 \times 68.9 \times 10^9}\\\\d_3 =-0.402 \times 10^{-3}\;meter\)

For the total displacement:

The total displacement is equal to the displacement of end D with respect to end A.

\(d_T = d_1 +d_2+d_3\\\\d_T = -0.201 \times 10^{-3} + 0.115 \times 10^{-3}-0.402 \times 10^{-3}\\\\d_T = -0.488 \times 10^{-3}\;m\)

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Segments ab and cd of the assembly are solid circular rods, and segment bc is a tube. If the assembly

Technician A says that ordered parts should be at the repair facility and inspected before repairs are begun Technician B says that repairs may begin once
all supplemental damage has been identified Who is right?
A) Neither
B) both
C) B only
D)A only

Answers

The correct technician is Technician A and B. Note it is best practice to ensure that ordered parts should be at the repair facility and inspected before repairs. After repairs have been inspected, then repairs can begin.(Option B). Both actions a requires.

What is a repair facility?

A repair facility is a place where maintenance and repair work is carried out on various types of equipment and machinery.

Inspecting ordered parts is important in a repair facility because it ensures that the right parts are being used for the repair and that they meet the required quality standards.

By checking the parts before they are installed, the repair facility can identify and correct any issues that could cause problems during operation, and avoid costly downtime and repairs in the future.

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A piece of coaxial cable has 75ohms Characteristics impedance and a nominal capacitance of 69pF/m. what is its inductance per meter ? If the diameter of the inner conductor is 0.584mm, and the dielectric constant of the insulation is 2.23, what is the outer diameter of the conductor ?​

Answers

Answer:

A) L = 0.388 μm

B) D = 3.78 mm

Explanation:

We are given;

Characteristics impedance; Z_o = 75 ohms

Nominal capacitance; C = 69pF/m = 69 × 10^(-12) F/m

dielectric constant; k = 2.23

Inner diameter of conductor; d = 0.584 mm

A) Now formula for Characteristics impedance is given as;

Z_o = √(L/C)

Where L is the inductance per metre.

Making L the subject, we have;

L = (Z_o)²C

L = 75² × 69 × 10^(-12)

L = 0.388 × 10^(-6) m

L = 0.388 μm

B) To get the outer diameter, we will use the formula;

Z_o = (138/√k) log(D/d)

Where;

D is outer diameter.

Thus, Plugging in the relevant values;

75 = (138/√2.23) × log (D/0.584)

log (D/0.584) = 0.81158611538

(D/0.584) = 10^(0.81158611538)

D/0.584 = 6.48016576435

D = 6.48016576435 × 0.584

D = 3.78 mm

the failure of engineers working on the mars climate-orbiter to coordinate measurement standards resulted in major public embarrassment for nasa. the years of interaction between british and u.s. teams working on this project are an example of what communication issue?

Answers

Answer: The failure of engineers working on the Mars Climate-Orbiter to coordinate measurement standards, resulting in a major public embarrassment for NASA, is an example of a communication issue known as cultural difference or cross-cultural communication. This refers to the difficulties that can arise when people from different cultures, with different languages, customs, and communication styles, work together on a project. In this case, the interaction between the British and U.S. teams working on the Mars Climate-Orbiter project is an example of cultural differences that led to communication issues and ultimately resulted in the failure of the project.

Specifically, the engineers from the US team used the imperial system of measurement, while the engineers from the UK team used the metric system, this led to a misinterpretation of the data, and the orbiter was lost due to a miscalculation in the trajectory.

Explanation:

Where does Burj Khalifa located? and how many meters?​

Answers

Answer:

Burj Khalifa is located in dubai UAE at over 828m

Explanation:

828 metres

Answer:

The Burji Khalifa, known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. With a total hight of 829.8 m and a roof hight of 828 m, the Burji Khalifa has been the tallest structure and building in the world since its topping out in 2009.

Q3
a. A binary search tree may be balanced or unbalanced based on the arrangement
of the nodes of the tree. With you knowledge in Binary search tree:
i. Explain the best and worst case scenarios of the time and space complexity of
both type of binary trees above. (AP)15 marks
b. A program accepts natural numbers N and M as inputs into an integer array A[ ]
and B[ ], each consisting of N and M of elements respectively. Sort the arrays A[ ]
and b[ ] in descending order of magnitude. Use the sorted array to generate a merged
array C[ ]. Array C[ ] should be generated in descending order. Assume the input
arrays comprise a maximum of 20 elements each, with no duplicates. Common
elements should be included in the merged array only once.
Using C++ implement the program above to achieve its stated requirements
above

Answers

The best case scenarios of the time and space complexity of binary search is simply the time complexity of the binary search algorithm which is O(log n).

However, this balanced scenarios complexity would be O(1) when the central index would directly match the desired value.

On the other end, for an unbalanced scenarios of binary search tree, the running time of a binary search would be O(n). which will represent a linked list

What is binary search tree?

The binary search tree simply refers to an advanced algorithm used for analyzing the node, its left and right branches, which are eventually modeled in a tree structure and returning the value.

So therefore, the best case scenarios of the time and space complexity of binary search is simply the time complexity of the binary search algorithm which is O(log n).

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